/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:24:32,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:24:32,936 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:24:32,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:24:32,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:24:32,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:24:32,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:24:32,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:24:32,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:24:32,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:24:32,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:24:32,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:24:32,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:24:32,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:24:32,974 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:24:32,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:24:32,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:24:32,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:24:32,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:24:32,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:24:32,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:24:32,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:24:32,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:24:32,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:24:32,986 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:24:32,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:24:32,987 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:24:32,987 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:24:32,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:24:32,987 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:24:32,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:24:32,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:24:32,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:24:32,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:24:32,989 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:24:33,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:24:33,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:24:33,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:24:33,227 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:24:33,227 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:24:33,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-12-16 11:24:34,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:24:34,491 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:24:34,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-12-16 11:24:34,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e288f4f/56e1fe03c22a4f4a939736c3febd2a7f/FLAGbf1c865ce [2023-12-16 11:24:34,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e288f4f/56e1fe03c22a4f4a939736c3febd2a7f [2023-12-16 11:24:34,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:24:34,519 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:24:34,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:24:34,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:24:34,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:24:34,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:34,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30278d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34, skipping insertion in model container [2023-12-16 11:24:34,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:34,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:24:34,689 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-12-16 11:24:34,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:24:34,846 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:24:34,854 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-49.i[916,929] [2023-12-16 11:24:34,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:24:34,987 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:24:34,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34 WrapperNode [2023-12-16 11:24:34,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:24:34,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:24:34,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:24:34,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:24:34,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,091 INFO L138 Inliner]: procedures = 27, calls = 115, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 679 [2023-12-16 11:24:35,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:24:35,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:24:35,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:24:35,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:24:35,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,142 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:24:35,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:24:35,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:24:35,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:24:35,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:24:35,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (1/1) ... [2023-12-16 11:24:35,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:24:35,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:24:35,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:24:35,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:24:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:24:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:24:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:24:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:24:35,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:24:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:24:35,430 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:24:35,431 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:24:46,079 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:24:46,135 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:24:46,135 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:24:46,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:24:46 BoogieIcfgContainer [2023-12-16 11:24:46,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:24:46,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:24:46,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:24:46,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:24:46,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:24:34" (1/3) ... [2023-12-16 11:24:46,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a731e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:24:46, skipping insertion in model container [2023-12-16 11:24:46,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:24:34" (2/3) ... [2023-12-16 11:24:46,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a731e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:24:46, skipping insertion in model container [2023-12-16 11:24:46,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:24:46" (3/3) ... [2023-12-16 11:24:46,142 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-49.i [2023-12-16 11:24:46,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:24:46,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:24:46,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:24:46,221 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@285545e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:24:46,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:24:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-16 11:24:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2023-12-16 11:24:46,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:24:46,263 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:24:46,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:24:46,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:24:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1263114680, now seen corresponding path program 1 times [2023-12-16 11:24:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:24:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110884220] [2023-12-16 11:24:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:24:46,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:46,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:24:46,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:24:46,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:24:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:24:47,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:24:47,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:24:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 10322 proven. 0 refuted. 0 times theorem prover too weak. 10282 trivial. 0 not checked. [2023-12-16 11:24:47,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:24:47,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:24:47,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110884220] [2023-12-16 11:24:47,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110884220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:24:47,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:24:47,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:24:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645811625] [2023-12-16 11:24:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:24:47,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:24:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:24:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:24:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:24:47,552 INFO L87 Difference]: Start difference. First operand has 285 states, 180 states have (on average 1.6) internal successors, (288), 181 states have internal predecessors, (288), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-16 11:24:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:24:47,671 INFO L93 Difference]: Finished difference Result 566 states and 1082 transitions. [2023-12-16 11:24:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:24:47,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 647 [2023-12-16 11:24:47,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:24:47,691 INFO L225 Difference]: With dead ends: 566 [2023-12-16 11:24:47,691 INFO L226 Difference]: Without dead ends: 282 [2023-12-16 11:24:47,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:24:47,717 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 11:24:47,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 11:24:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-16 11:24:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-16 11:24:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 102 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-16 11:24:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 481 transitions. [2023-12-16 11:24:47,813 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 481 transitions. Word has length 647 [2023-12-16 11:24:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:24:47,814 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 481 transitions. [2023-12-16 11:24:47,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-16 11:24:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 481 transitions. [2023-12-16 11:24:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-16 11:24:47,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:24:47,832 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:24:47,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 11:24:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:48,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:24:48,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:24:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1128107433, now seen corresponding path program 1 times [2023-12-16 11:24:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:24:48,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835030602] [2023-12-16 11:24:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:24:48,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:24:48,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:24:48,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:24:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:24:49,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:24:49,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:24:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:24:49,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:24:49,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:24:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835030602] [2023-12-16 11:24:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835030602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:24:49,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:24:49,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:24:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559517541] [2023-12-16 11:24:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:24:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:24:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:24:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:24:49,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:24:49,265 INFO L87 Difference]: Start difference. First operand 282 states and 481 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:24:49,845 INFO L93 Difference]: Finished difference Result 725 states and 1241 transitions. [2023-12-16 11:24:49,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:24:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-12-16 11:24:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:24:49,850 INFO L225 Difference]: With dead ends: 725 [2023-12-16 11:24:49,850 INFO L226 Difference]: Without dead ends: 444 [2023-12-16 11:24:49,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:24:49,852 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 240 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 11:24:49,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 939 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 11:24:49,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-16 11:24:49,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2023-12-16 11:24:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 299 states have (on average 1.585284280936455) internal successors, (474), 300 states have internal predecessors, (474), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 138 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-16 11:24:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 752 transitions. [2023-12-16 11:24:49,881 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 752 transitions. Word has length 648 [2023-12-16 11:24:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:24:49,882 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 752 transitions. [2023-12-16 11:24:49,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:49,882 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 752 transitions. [2023-12-16 11:24:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-16 11:24:49,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:24:49,887 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:24:49,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-16 11:24:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:50,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:24:50,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:24:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1262120939, now seen corresponding path program 1 times [2023-12-16 11:24:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:24:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396285295] [2023-12-16 11:24:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:24:50,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:50,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:24:50,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:24:50,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 11:24:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:24:51,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:24:51,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:24:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:24:51,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:24:51,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:24:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396285295] [2023-12-16 11:24:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396285295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:24:51,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:24:51,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:24:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289243662] [2023-12-16 11:24:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:24:51,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:24:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:24:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:24:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:24:51,395 INFO L87 Difference]: Start difference. First operand 441 states and 752 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:24:52,156 INFO L93 Difference]: Finished difference Result 895 states and 1518 transitions. [2023-12-16 11:24:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:24:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 648 [2023-12-16 11:24:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:24:52,160 INFO L225 Difference]: With dead ends: 895 [2023-12-16 11:24:52,160 INFO L226 Difference]: Without dead ends: 455 [2023-12-16 11:24:52,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:24:52,162 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 246 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 11:24:52,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1004 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 11:24:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-16 11:24:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 362. [2023-12-16 11:24:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 257 states have (on average 1.575875486381323) internal successors, (405), 257 states have internal predecessors, (405), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-16 11:24:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 609 transitions. [2023-12-16 11:24:52,178 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 609 transitions. Word has length 648 [2023-12-16 11:24:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:24:52,179 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 609 transitions. [2023-12-16 11:24:52,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 609 transitions. [2023-12-16 11:24:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-16 11:24:52,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:24:52,184 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:24:52,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 11:24:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:52,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:24:52,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:24:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash 156247719, now seen corresponding path program 1 times [2023-12-16 11:24:52,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:24:52,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229749628] [2023-12-16 11:24:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:24:52,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:24:52,408 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:24:52,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 11:24:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:24:53,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:24:53,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:24:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:24:53,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:24:53,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:24:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229749628] [2023-12-16 11:24:53,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229749628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:24:53,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:24:53,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 11:24:53,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727640566] [2023-12-16 11:24:53,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:24:53,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:24:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:24:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:24:53,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:24:53,843 INFO L87 Difference]: Start difference. First operand 362 states and 609 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:24:57,664 INFO L93 Difference]: Finished difference Result 1382 states and 2317 transitions. [2023-12-16 11:24:57,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 11:24:57,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 649 [2023-12-16 11:24:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:24:57,675 INFO L225 Difference]: With dead ends: 1382 [2023-12-16 11:24:57,676 INFO L226 Difference]: Without dead ends: 1021 [2023-12-16 11:24:57,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 11:24:57,681 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1546 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:24:57,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1757 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-16 11:24:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-16 11:24:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 753. [2023-12-16 11:24:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 498 states have (on average 1.5301204819277108) internal successors, (762), 500 states have internal predecessors, (762), 247 states have call successors, (247), 7 states have call predecessors, (247), 7 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-16 11:24:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1256 transitions. [2023-12-16 11:24:57,773 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1256 transitions. Word has length 649 [2023-12-16 11:24:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:24:57,775 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1256 transitions. [2023-12-16 11:24:57,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:24:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1256 transitions. [2023-12-16 11:24:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-16 11:24:57,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:24:57,780 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:24:57,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 11:24:57,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:57,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:24:57,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:24:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash -724601617, now seen corresponding path program 1 times [2023-12-16 11:24:57,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:24:57,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616072508] [2023-12-16 11:24:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:24:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:24:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:24:57,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:24:58,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 11:24:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:24:59,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:24:59,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:24:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 8597 proven. 87 refuted. 0 times theorem prover too weak. 11920 trivial. 0 not checked. [2023-12-16 11:24:59,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 216 proven. 87 refuted. 0 times theorem prover too weak. 20301 trivial. 0 not checked. [2023-12-16 11:25:00,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616072508] [2023-12-16 11:25:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616072508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:25:00,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:25:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 11:25:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742489444] [2023-12-16 11:25:00,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:25:00,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:25:00,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:25:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:25:00,226 INFO L87 Difference]: Start difference. First operand 753 states and 1256 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-16 11:25:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:01,529 INFO L93 Difference]: Finished difference Result 1459 states and 2421 transitions. [2023-12-16 11:25:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:25:01,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 649 [2023-12-16 11:25:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:01,543 INFO L225 Difference]: With dead ends: 1459 [2023-12-16 11:25:01,544 INFO L226 Difference]: Without dead ends: 779 [2023-12-16 11:25:01,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1300 GetRequests, 1290 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 11:25:01,546 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 288 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:01,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 900 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 11:25:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-16 11:25:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 761. [2023-12-16 11:25:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 504 states have (on average 1.5119047619047619) internal successors, (762), 506 states have internal predecessors, (762), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-16 11:25:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1256 transitions. [2023-12-16 11:25:01,591 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1256 transitions. Word has length 649 [2023-12-16 11:25:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:01,591 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1256 transitions. [2023-12-16 11:25:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-12-16 11:25:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1256 transitions. [2023-12-16 11:25:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2023-12-16 11:25:01,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:01,596 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:01,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:01,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:01,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:01,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash -958980496, now seen corresponding path program 1 times [2023-12-16 11:25:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140876586] [2023-12-16 11:25:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:01,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:01,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:01,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:01,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 11:25:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:02,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:25:02,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:25:03,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:25:03,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140876586] [2023-12-16 11:25:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140876586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:25:03,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:25:03,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:25:03,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267511429] [2023-12-16 11:25:03,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:25:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:25:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:03,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:25:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:25:03,007 INFO L87 Difference]: Start difference. First operand 761 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:03,273 INFO L93 Difference]: Finished difference Result 2137 states and 3538 transitions. [2023-12-16 11:25:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:25:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 650 [2023-12-16 11:25:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:03,281 INFO L225 Difference]: With dead ends: 2137 [2023-12-16 11:25:03,281 INFO L226 Difference]: Without dead ends: 1449 [2023-12-16 11:25:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:25:03,284 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 461 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1368 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:25:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-12-16 11:25:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 802. [2023-12-16 11:25:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 545 states have (on average 1.5321100917431192) internal successors, (835), 547 states have internal predecessors, (835), 247 states have call successors, (247), 9 states have call predecessors, (247), 9 states have return successors, (247), 245 states have call predecessors, (247), 247 states have call successors, (247) [2023-12-16 11:25:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1329 transitions. [2023-12-16 11:25:03,343 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1329 transitions. Word has length 650 [2023-12-16 11:25:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:03,343 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1329 transitions. [2023-12-16 11:25:03,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1329 transitions. [2023-12-16 11:25:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-16 11:25:03,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:03,348 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:03,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:03,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:03,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:03,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash -430014752, now seen corresponding path program 1 times [2023-12-16 11:25:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:03,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538173486] [2023-12-16 11:25:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:03,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:03,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:03,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 11:25:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:04,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:25:04,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:06,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:06,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538173486] [2023-12-16 11:25:06,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538173486] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1944556451] [2023-12-16 11:25:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:06,487 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:06,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:25:06,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:25:06,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 11:25:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:08,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:25:08,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:25:08,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:25:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1944556451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:25:08,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:25:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 11:25:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203744304] [2023-12-16 11:25:08,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:25:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:25:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:25:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:25:08,558 INFO L87 Difference]: Start difference. First operand 802 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:08,810 INFO L93 Difference]: Finished difference Result 2205 states and 3654 transitions. [2023-12-16 11:25:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:25:08,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-16 11:25:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:08,817 INFO L225 Difference]: With dead ends: 2205 [2023-12-16 11:25:08,818 INFO L226 Difference]: Without dead ends: 1476 [2023-12-16 11:25:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:25:08,821 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 470 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1027 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 11:25:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-12-16 11:25:08,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1237. [2023-12-16 11:25:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 874 states have (on average 1.55720823798627) internal successors, (1361), 876 states have internal predecessors, (1361), 349 states have call successors, (349), 13 states have call predecessors, (349), 13 states have return successors, (349), 347 states have call predecessors, (349), 349 states have call successors, (349) [2023-12-16 11:25:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2059 transitions. [2023-12-16 11:25:08,906 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2059 transitions. Word has length 651 [2023-12-16 11:25:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:08,907 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2059 transitions. [2023-12-16 11:25:08,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:08,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2059 transitions. [2023-12-16 11:25:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-16 11:25:08,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:08,912 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:08,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:09,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:09,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:09,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:09,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -852716578, now seen corresponding path program 1 times [2023-12-16 11:25:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174035790] [2023-12-16 11:25:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:09,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:09,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:09,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:09,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 11:25:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:10,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:25:10,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:11,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:12,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174035790] [2023-12-16 11:25:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174035790] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998050087] [2023-12-16 11:25:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:12,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:25:12,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:25:12,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-16 11:25:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:14,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:25:14,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:25:14,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:25:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1998050087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:25:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:25:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 11:25:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507650467] [2023-12-16 11:25:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:25:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:25:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:25:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:25:14,116 INFO L87 Difference]: Start difference. First operand 1237 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:14,626 INFO L93 Difference]: Finished difference Result 3104 states and 5184 transitions. [2023-12-16 11:25:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:25:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-16 11:25:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:14,636 INFO L225 Difference]: With dead ends: 3104 [2023-12-16 11:25:14,637 INFO L226 Difference]: Without dead ends: 1940 [2023-12-16 11:25:14,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1377 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:25:14,641 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 255 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:14,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1119 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 11:25:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2023-12-16 11:25:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1935. [2023-12-16 11:25:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1398 states have (on average 1.5701001430615165) internal successors, (2195), 1403 states have internal predecessors, (2195), 514 states have call successors, (514), 22 states have call predecessors, (514), 22 states have return successors, (514), 509 states have call predecessors, (514), 514 states have call successors, (514) [2023-12-16 11:25:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3223 transitions. [2023-12-16 11:25:14,771 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3223 transitions. Word has length 651 [2023-12-16 11:25:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:14,772 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 3223 transitions. [2023-12-16 11:25:14,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3223 transitions. [2023-12-16 11:25:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-16 11:25:14,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:14,777 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:14,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:15,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:15,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:15,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:15,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:15,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1439522592, now seen corresponding path program 1 times [2023-12-16 11:25:15,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:15,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761740141] [2023-12-16 11:25:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:15,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:15,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:15,192 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:15,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 11:25:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:16,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:25:16,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:17,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:17,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761740141] [2023-12-16 11:25:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761740141] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [20830888] [2023-12-16 11:25:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:17,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:17,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:25:17,487 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:25:17,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-16 11:25:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:19,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:25:19,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:25:20,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:25:20,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [20830888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:25:20,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:25:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 11:25:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791883630] [2023-12-16 11:25:20,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:25:20,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:25:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:25:20,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:25:20,398 INFO L87 Difference]: Start difference. First operand 1935 states and 3223 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:21,060 INFO L93 Difference]: Finished difference Result 4883 states and 8231 transitions. [2023-12-16 11:25:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:25:21,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 651 [2023-12-16 11:25:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:21,081 INFO L225 Difference]: With dead ends: 4883 [2023-12-16 11:25:21,081 INFO L226 Difference]: Without dead ends: 3021 [2023-12-16 11:25:21,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 11:25:21,087 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 411 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:21,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1424 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 11:25:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2023-12-16 11:25:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2137. [2023-12-16 11:25:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1703 states have (on average 1.6288901937756899) internal successors, (2774), 1705 states have internal predecessors, (2774), 416 states have call successors, (416), 17 states have call predecessors, (416), 17 states have return successors, (416), 414 states have call predecessors, (416), 416 states have call successors, (416) [2023-12-16 11:25:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3606 transitions. [2023-12-16 11:25:21,227 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3606 transitions. Word has length 651 [2023-12-16 11:25:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:21,228 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3606 transitions. [2023-12-16 11:25:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3606 transitions. [2023-12-16 11:25:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-16 11:25:21,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:21,232 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:21,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-16 11:25:21,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:21,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:21,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1497196462, now seen corresponding path program 1 times [2023-12-16 11:25:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:21,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937592378] [2023-12-16 11:25:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:21,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:21,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:21,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 11:25:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:22,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:25:22,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:23,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:23,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937592378] [2023-12-16 11:25:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937592378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [744138619] [2023-12-16 11:25:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:23,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:25:23,673 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:25:23,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-16 11:25:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:27,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 11:25:27,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20604 trivial. 0 not checked. [2023-12-16 11:25:28,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:25:28,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [744138619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:25:28,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:25:28,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 11:25:28,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103382275] [2023-12-16 11:25:28,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:25:28,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 11:25:28,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:28,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 11:25:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:25:28,673 INFO L87 Difference]: Start difference. First operand 2137 states and 3606 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:30,711 INFO L93 Difference]: Finished difference Result 7147 states and 12046 transitions. [2023-12-16 11:25:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 11:25:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) Word has length 652 [2023-12-16 11:25:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:30,738 INFO L225 Difference]: With dead ends: 7147 [2023-12-16 11:25:30,738 INFO L226 Difference]: Without dead ends: 5713 [2023-12-16 11:25:30,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 11:25:30,744 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 709 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:30,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1273 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 11:25:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2023-12-16 11:25:31,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5707. [2023-12-16 11:25:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 4617 states have (on average 1.6356941737058697) internal successors, (7552), 4623 states have internal predecessors, (7552), 1044 states have call successors, (1044), 45 states have call predecessors, (1044), 45 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-12-16 11:25:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 9640 transitions. [2023-12-16 11:25:31,092 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 9640 transitions. Word has length 652 [2023-12-16 11:25:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:31,093 INFO L495 AbstractCegarLoop]: Abstraction has 5707 states and 9640 transitions. [2023-12-16 11:25:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (102), 1 states have call predecessors, (102), 1 states have return successors, (102), 1 states have call predecessors, (102), 1 states have call successors, (102) [2023-12-16 11:25:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 9640 transitions. [2023-12-16 11:25:31,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-16 11:25:31,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:31,101 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:31,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:31,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:31,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:31,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -110993068, now seen corresponding path program 1 times [2023-12-16 11:25:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:31,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964850882] [2023-12-16 11:25:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:31,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:31,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:31,519 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:31,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 11:25:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:32,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:25:32,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:33,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:34,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:25:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964850882] [2023-12-16 11:25:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964850882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433602676] [2023-12-16 11:25:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:34,173 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:34,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:25:34,174 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:25:34,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-16 11:25:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:40,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 11:25:40,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 20604 backedges. 9851 proven. 186 refuted. 0 times theorem prover too weak. 10567 trivial. 0 not checked. [2023-12-16 11:25:41,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:25:41,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1433602676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:25:41,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:25:41,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 11:25:41,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379188022] [2023-12-16 11:25:41,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:25:41,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:25:41,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:25:41,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:25:41,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 11:25:41,630 INFO L87 Difference]: Start difference. First operand 5707 states and 9640 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-16 11:25:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:25:43,846 INFO L93 Difference]: Finished difference Result 10093 states and 16837 transitions. [2023-12-16 11:25:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 11:25:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 652 [2023-12-16 11:25:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:25:43,876 INFO L225 Difference]: With dead ends: 10093 [2023-12-16 11:25:43,876 INFO L226 Difference]: Without dead ends: 5849 [2023-12-16 11:25:43,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1465 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 11:25:43,888 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 229 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 11:25:43,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 865 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 11:25:43,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2023-12-16 11:25:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 4915. [2023-12-16 11:25:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 3812 states have (on average 1.594700944386149) internal successors, (6079), 3818 states have internal predecessors, (6079), 1044 states have call successors, (1044), 58 states have call predecessors, (1044), 58 states have return successors, (1044), 1038 states have call predecessors, (1044), 1044 states have call successors, (1044) [2023-12-16 11:25:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 8167 transitions. [2023-12-16 11:25:44,222 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 8167 transitions. Word has length 652 [2023-12-16 11:25:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:25:44,222 INFO L495 AbstractCegarLoop]: Abstraction has 4915 states and 8167 transitions. [2023-12-16 11:25:44,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (102), 2 states have call predecessors, (102), 3 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-12-16 11:25:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 8167 transitions. [2023-12-16 11:25:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-16 11:25:44,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:25:44,262 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:44,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:44,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:44,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 11:25:44,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:25:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:25:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2115353517, now seen corresponding path program 1 times [2023-12-16 11:25:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:25:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589655173] [2023-12-16 11:25:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:25:44,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:25:44,675 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:25:44,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 11:25:44,757 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:25:44,780 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:25:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:25:45,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:45,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 11:25:45,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:25:45,853 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:25:45,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 11:25:46,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:25:46,054 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 653 with TraceHistMax 102,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 11:25:46,057 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:25:46,059 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:25:46,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:25:46 BoogieIcfgContainer [2023-12-16 11:25:46,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:25:46,061 INFO L158 Benchmark]: Toolchain (without parser) took 71541.57ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 123.9MB in the beginning and 115.7MB in the end (delta: 8.2MB). Peak memory consumption was 99.9MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,061 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:25:46,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.66ms. Allocated memory is still 175.1MB. Free memory was 123.5MB in the beginning and 91.7MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.65ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 91.7MB in the beginning and 233.7MB in the end (delta: -142.0MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,061 INFO L158 Benchmark]: Boogie Preprocessor took 146.64ms. Allocated memory is still 265.3MB. Free memory was 233.7MB in the beginning and 224.8MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,061 INFO L158 Benchmark]: RCFGBuilder took 10895.27ms. Allocated memory is still 265.3MB. Free memory was 224.8MB in the beginning and 156.6MB in the end (delta: 68.2MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,062 INFO L158 Benchmark]: TraceAbstraction took 59923.07ms. Allocated memory is still 265.3MB. Free memory was 156.1MB in the beginning and 115.7MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-16 11:25:46,062 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 175.1MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 467.66ms. Allocated memory is still 175.1MB. Free memory was 123.5MB in the beginning and 91.7MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 103.65ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 91.7MB in the beginning and 233.7MB in the end (delta: -142.0MB). Peak memory consumption was 17.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 146.64ms. Allocated memory is still 265.3MB. Free memory was 233.7MB in the beginning and 224.8MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 10895.27ms. Allocated memory is still 265.3MB. Free memory was 224.8MB in the beginning and 156.6MB in the end (delta: 68.2MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. * TraceAbstraction took 59923.07ms. Allocated memory is still 265.3MB. Free memory was 156.1MB in the beginning and 115.7MB in the end (delta: 40.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 653 with TraceHistMax 102,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 285 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.9s, OverallIterations: 12, TraceHistogramMax: 102, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4965 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4855 mSDsluCounter, 12154 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5997 mSDsCounter, 661 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1862 IncrementalHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 661 mSolverCounterUnsat, 6157 mSDtfsCounter, 1862 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11544 GetRequests, 11496 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5707occurred in iteration=10, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 3097 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 25.1s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 10405 NumberOfCodeBlocks, 10405 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 11037 ConstructedInterpolants, 29 QuantifiedInterpolants, 22256 SizeOfPredicates, 34 NumberOfNonLiveVariables, 16943 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 348978/350268 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown